• Asian-Australasian Journal of Animal Sciences
• /
• 제30권3호
• /
• pp.410-416
• /
• 2017

Objective: This study was to evaluate the sunflower cake and enzymatic complex fed to broilers from 22 to 42 d of age. Methods: In a completely randomized design, a total of 850 birds were allotted in a $2{\times}5$ factorial scheme (with and without enzymatic complex) and five inclusion levels (0%, 5%, 10%, 15%, 20%) of sunflower cake. There were 5 replications and 17 birds in each experimental unit. Data from performance, carcass yield and intestinal morphology were evaluated. Results: Feed intake, weight gain, final weight and feed:gain ratio linearly worsened as sunflower cake increased. For weight gain, final weight and feed:gain ratio, the birds whose diets contained levels of 15% and 20% of sunflower cake showed worse values (p<0.05) than the birds fed the control diet. When fed the enzymatic complex, birds improved (p<0.05) crypt depth and villus:crypt ratio in the jejunum. As inclusion levels of sunflower cake increased, villus depth and villus:crypt ratio in duodenum, jejunum and ileum linearly reduced and the crypt depth linearly increased. Carcass yield linearly reduced as sunflower cake increased. Conclusion: Based on performance, sunflower cake can be used up to 10% in broilers feeding from 21 to 42 days of age.

• Journal of Animal Science and Technology
• /
• 제49권1호
• /
• pp.9-14
• /
• 2007

본 연구는 종료웅돈의 변화를 통한 도체성적을 개선시키고 그에 따른 육량 조사를 통한 경제성을 알아보고자 수행하였다. 평균성적에서 과거 연구보다 등지방이 다소 얇았고 도체율은 높거나 비슷하였다. 품종별 분석에서는 YL(♀)×BD(♂)가 생체중에 비해 도체중이 가장 낮았지만, 정육율에서는 YL(♀)×BD(♂) 보다 수치상으로 높았다.부분육 중량에서 YL(♀)×BD(♂)가 삼겹살 중량에서 비교대상의 교배조합에 비해 높았고, 도체중이 낮은 것을 감안한다면 다른 부분육 중량에서도 YL(♀)×D(♂)와 차이가 없을 것이라 사료된다.표현형 상관관계에서는 도체 등지방이 다른 부분육에 부의 상관을 보였으나 삼겹살 중량에서는 정의 상관을 보였다. 본 연구에서 분석한 교배조합 중 BD(F1)을 종료웅돈으로 사용한 경우 도체형질이나 부위별 실중량 측정에서 Duroc 종을 종료웅돈으로 사용한 것과 차이가 없었으나 삼겹살 중량이 많고 AB 등급 출현율이 우수하여, 새로운 비육돈(YLBD)가 농가 수익증대에 기여 할 수 있을 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제9권1호
• /
• pp.101-106
• /
• 1996

This experiment was conducted to investigate the effect of bST administration on growth performance and carcass characteristics of finishing Korean native bulls. Fifty four Korean native bulls of about 14 months of age weighting an average 420 kg were assigned to receive no injection of bST, 250 mg of bST s.c. injection every week, or 500 mg bST s.c. injection every 2 weeks (Control, 250ST, 500ST) in a $3{\times}3$ randomized block design for a period of 20 weeks Animals administered with bST responded with decreased feed DMI by 8%(p < 0.01), increased ADG by 12%(p < 0.05), and increased gain/feed ratio by 20%(p < 0.01). But there was no significant difference in the growth performance between 250ST and 500ST. Administration of bST increased dressing percentage by 1.8%(p < 0.05), and tended to increase longissimus muscle area and decrease backfat thickness and marbling score.

• 한국가금학회지
• /
• 제40권1호
• /
• pp.41-47
• /
• 2013

본 시험은 세 가지 다른 사육 밀도가 대형 육계 암컷의 생산성과 도체 수율에 미치는 영향을 조사하기 위해 수행하였다. 처리구는 사육 밀도에 따라 T1(10.9 수/$m^2$), T2(12.4 수/$m^2$) 및 T3(13.9 수/$m^2$)로 하였다. 공시계는 1일령 Arbor Acre종 육계 암컷 492수를 선별하여 처리구당 4반복씩, 반복당 각각 36, 41 및 46수씩 나누어 완전임의 배치하였으며, 육계 초기(0~1주), 전기(1~3주) 및 후기(3~6주)로 나누어 총 6주 동안 사양시험을 실시하였다. 조사 항목으로 생존율, 체중, 증체량, 사료 섭취량, 사료 요구율, 생산지수, 도체 수율 그리고 부분육 비율(날개, 다리, 가슴, 등, 목)을 조사하였다. 6주 동안의 육성률은 세 처리구 모두 90% 이상으로 높게 나타났으며, 처리구 간 차이가 없었다. 육계의 체중은 3주령, 증체량, 사료 섭취량 및 사료 요구율은 2~3주령에 T3 처리구에서 가장 낮았으며(P<0.05), T1과 T2 처리구 사이에 서는 유의차가 없었다(P>0.05). T1, T2 및 T3 처리구의 생산지수는 각각 331.0, 340.8, 336.0으로 처리구 사이에 유의적인 차이는 발견되지 않았다. 4주령 육계의 도체 수율과 대부분의 부분육(날개, 가슴, 등, 목) 비율은 처리구 간 차이가 없었으나, 다리 부위의 비율은 T2에서 가장 높았다(P<0.05). 5주령 육계의 도체 수율은 T1처리구에서 76.2%로 가장 높았으나(P<0.05), 부분육 비율은 처리구 간 유의차가 없었다. 6주령 육계의 도체 수율과 부분육 비율은 처리구 간 차이가 없었다. 본 시험은 대형 육계 암컷을 위한 다양한 사육 밀도를 기초자료로 제공하였으며, 추가적인 연구가 필요하다고 사료된다.

• 한국축산식품학회지
• /
• 제24권3호
• /
• pp.246-252
• /
• 2004

재래돼지 수컷과 랜드레이스 암컷을 교배하여 생산된 돼지 250두의 등급에 따른 돼지의 도체 특성과 돈육의 이화학적 특성을 비교한 결과는 다음과 같다. 생체중, 도체중, 지육율 및 등지방 두께는 E등급이 다른 네 등급에 비하여 유의적으로(P<0.05) 낮게 나타났다. 등급이 높을수록 가열 감량은 유의적으로(P<0.05) 많았으며, 수분 및 조지방 함량, PH 및 전단가는 등급간에 차이를 보이지 않았다. 육색 a＊값은 C와D등급이 유의적으로 가장 높았으며, A등급이 유의적으로 가장 낮게 나타났으나 L＊값과 b＊값은 등급간에 차이를 보이지 않았다. 지방색 b＊값은 A와 E 등급이 유의적으로 가장 높게 나타났으며, C 등급이 유의적으로(P<0.05) 가장 낮게 나타났으나 L＊값과 a＊ 값은 등급간에 차이를 보이지 않았다. 가열육의 부착성과 씹힘성은 등급이 높을수록 유의적으로 (P<0.05)높게 나타났으나 경도, 응집성, 탄력성 및 파쇄성은 등급간에 차이를 보이지 않았다. 지방산조성은 등급이 높을 수록 palmitic산 함량이 유의적으로(P<0.05) 높고 불포화지방산/포화지방산 비율은 유의적으로(P<0.05) 낮게 나타났으며, 기타 다른 지방산들은 등급간에 유의적인 차이를 보이지 않았다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제31권6호
• /
• pp.859-863
• /
• 2018

Objective: Since very little information exists about the topic; in this experiment we compare, in a long-term finishing program, the growth-performance responses and carcass characteristics of Holstein steers where non-structural carbohydrate concentration of the diet is reduced from 64% to 51% (dry matter basis). Methods: Sixty Holstein steer calves ($129{\pm}2.2kg$) were blocked by initial weight into five groups and randomly assigned within weight groupings to 10 pens. Calves were fed with a steam-flaked corn-based finishing diets containing 51% higher fiber (HF) or 64% lower fiber (LF) nonstructural carbohydrates. Non-structural carbohydrates concentrations were manipulated substituting dried distiller grain with solubles and alfalfa hay for flaked corn. Cattle were weighed every 112 days and at the end of the experiment (day 308) when the cattle were harvested and carcass characteristics were evaluated. Results: Steers fed the HF diet showed improvement (8.8%) in average daily gain (ADG) during the initial 112-d period. This effect was followed by a numerical trend for greater ADG throughout the remainder of the study so that overall ADG tended to be greater (4.9%, p = 0.06) for the HF than for LF. There were no treatment effects on dry matter intake. Gain efficiency and estimated dietary net energy (NE) were greater 8.3% and 5.2%, respectively for HF during the initial 112-d period. Overall (308-d) gain efficiency and estimated dietary NE were similar for both dietary treatments. However, due to differences in tabular dietary NE, the ratio of observed:expected dietary NE tended to be greater (4.1%, p = 0.06) for the HF vs LF diet. There were no treatment effects on carcass characteristics except for a tendency toward a slightly greater (0.5%, p = 0.09) estimated carcass yield. Conclusion: Reducing the non-structural carbohydrate concentration of a conventional steam-flaked corn-based growing finishing diet for Holstein steers can effectively enhance growth performance, particularly during the early growing and late finishing phases.

• 한국축산식품학회지
• /
• 제34권2호
• /
• pp.141-150
• /
• 2014

This study was conducted to determine the effects of hempseed (H) on performance, carcass traits, and antioxidant activity in Japanese quail (Coturnix coturnix japonica). A total of 192 quail with seven-days old were divided into four experimental groups with four replicates. The treatments were; i) Control diet (C, no hempseed); ii) 5% hempseed in diet (H5); iii) 10% hempseed in diet (H10); and iv) 20% hempseed in diet (H20). The body weight (BW) and feed intake (FI) of quail was determined at 7, 21 and 42 d of age. At 42 d of age four quail were slaughtered and the carcass and internal organ traits were determined. Malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), nitric oxide (NO) and total protein were determined in the blood serum end of the experiment. The BW of the groups were not significant at 7 and 21 d, however in the 20% hempseed group BW decreased at 42 d (p<0.05). The FI and feed conversion ratio were not significant among the treatment groups. The carcass, liver, intestine and heart weight and their percentage to carcass were significantly differ in treatment groups (p<0.05). The serum MDA and NO decreased in hempseed addition (p <0.001). The serum SOD, CAT and GSH-Px were increased by hempseed supplementation (p<0.001). In conclusion, hempseed supplementation to quail diets may not improve quail performance traits but increase antioxidant activity in blood.

• Asian-Australasian Journal of Animal Sciences
• /
• 제24권2호
• /
• pp.206-213
• /
• 2011

An experiment was conducted to evaluate the effect of replacing barley and soybean meal in finishing diets with sesame hull (SH) on growth performance, digestibility, and carcass characteristics of Black goat kids. Twenty-one Black goat kids were assigned randomly to 0%, 10%, or 20% SH diets (7/diet). The study lasted for 63 d. Intakes of dry matter (DM), organic matter (OM), and crude protein (CP) of kids fed the 10% diet were greater (p<0.05) than for the 0% and 20% SH diets (p<0.10). Neutral detergent fiber (NDF) and acid detergent fiber (ADF) intakes were highest (p<0.05) for kids fed the 10% SH diet when compared to 0% and 20% SH diets. Ether extract (EE) intake was greater (p<0.05) for kids fed 10% and 20% SH diets when compared to 0% SH. Digestibilities of DM, OM, CP, NDF, and ADF were similar among all diets. However, sesame hull inclusion increased (p<0.05) EE digestibility. Final body weight, total gain, average daily gain (ADG), and feed conversion ratio were comparable among all diets. Cost of gain was lower (p<0.05) in kids fed 20% SH than the 0% SH diet, while there was no difference between the 10% SH diet and the other two diets. Dressing percentage, hot and cold carcass weights, non-carcass components, carcass cut weights, and meat quality parameters were not influenced by SH. Total fat percentage in the leg was greater (p<0.05) on 0% SH than on the 10% SH diet. Results of this study demonstrated that inclusion of sesame hull at levels of 10 or 20% did not influence the performance of Black goat kids, but the cost of gain was lower.

• Asian-Australasian Journal of Animal Sciences
• /
• 제17권12호
• /
• pp.1700-1704
• /
• 2004

Ninety six growing pigs ($Duroc{\times}Landrace{\times}Jia$) were used to investigate the effects of betaine on growth, nutrient utilization, carcass composition and meat quality at different levels of betaine in the diet. The pigs were randomly assigned by weight to four groups, each of which was replicated three times with eight pigs per replicate. Four groups were fed with diets supplemented with 0, 1,000, 1,500 and 2,000 mg/kg betaine. The pigs were grown from 20 kg live weight to approximately 64 kg. The 1,000 mg/kg and 1,500 mg/kg betaine treated groups increased average daily gain by 13.20% (p<0.01) and 9.28% (p<0.05) and average daily feed intake by 7.30% (p<0.05) and 7.33% (p<0.01) respectively and decreased feed conversion ratio by 7.93% (p<0.01) and 6.55% (p<0.05) respectively compared to the control group. However, these differences were not found in the other betaine treated groups. The 1,000 mg/kg betaine treated group significantly elevated carcass lean proportion by 7.49% (p<0.05) and longissimus muscle area by 19.12% p<0.05) and contents of ether extract and myoglobin in longissimus dorsi. by 34.21% (p<0.01) and 29.56% (p<0.01) respectively, reduced carcass fat proportion and fat depth by 27.21% (p<0.05) and 14.86% (p<0.05) respectively compared to the control group. It is concluded that betaine supplementation in the diets may improve growth performance and carcass characteristics in growing pigs.

• 농업과학연구
• /
• 제42권3호
• /
• pp.253-259
• /
• 2015

This study was conducted to investigate the effect of different additives on the growth performance, feed efficiency and carcass characteristics in Holstein steers during 18month fattening periods. Twenty four Holstein steers, 5months of age and 176.6kg, were randomly allocated to 3 experimental groups 8 animals each for 18-months feeding trial. The groups were control (not additive), T1 (fed zinc, Vitamin C) and T2 (fed zinc, Vitamin C, Vitamin B6 and Selenium). According to feeding additives, final weight was not significantly different among the treatment groups, tended to be high at T2 group (827kg) compared to the other groups. Average daily gain was not different among the treatment groups during the experimental periods, but T2 group was significantly greater than T1 group in growing stage (p<0.05). The feed additives had no effects on DMI during experimental periods. Feed conversion ratio of T1 group in growing stage was significantly higher than those of other groups (p<0.05), average feed conversion ratio was tend to be decreased at T2 group rather compared with other groups. In the results of yield traits, carcass weight were relatively higher in T2 group than other groups (p<0.05). Rib-eye area, back fat thickness and yield index were similar between groups. In quality traits, marbling, meat color, fat color, texture and maturity were not significantly different among the groups. In economic efficiency, income was highest at T2 group as 91~393 thousand won among 3 groups.