CAJ | 학술논문

选取体质量约为100 kg、氟烷基因型为NN的长×大二元杂交猪60头,随机分为3组:不休息组,休息3 h组,休息3 h+玩具组,公母各半.根据评分标准分别记录休息过程中猪的精神状况.放血时收集血样,用于分析血浆中皮质醇、促肾上腺皮质激素(ACTH)浓度,乳酸脱氢酶、肌酸激酶活性,乳酸、血糖浓度;添加EDTA-K<,2>抗凝剂的血样用于血细胞分析.同时在放血时,测定血温.屠宰后.测定背最长肌24 h滴水损失;背最长肌(LM)、半膜肌(SM)45 min以及24 h的pH、色值、导电率.结果表明:①休息3 h+玩具组在3个时间段的精神评分要极显著高于休息3 h组,随着时间的延长猪都表现出趋于平静的趋势;②休息3 h+玩具组和休息组3 h组在皮质醇、促肾上腺皮质激素要显著低于不休组(P<0.05),相反乳酸脱氢酶、肌酸激酶要显著高于不休息组(P<0.05),而休息3h+玩具组与休息3 h组差别不显著(P<0.05);③3个休息处理组在肉质指标上没有出现显著差别(P<0.05);④休息3 h+玩具组、休息3 h组在红细胞数(RBC)、血红蛋白含量(HGB)均要显著低于不休息组(P<0.05);休息3h+玩具组在白细胞数(WBC)上显著高于不休组(P<0.05);休息3 h组的淋巴细胞绝对值(W-SCC)显著高于不休息组(P<0.05);而休息3 h+玩具组与休息3 h组在所有的免疫指标上都没有显著差异(P>0.05).根据上述的结果显示,宰前一定要让猪有一个休息的过程,这种措施能有效缓解猪的应激,并能恢复其免疫能力;在休息的过程中,添加部分福利玩具,至少对猪的精神状态有明显的好处.
선취체질량약위100 kg、불완기인형위NN적장×대이원잡교저60두,수궤분위3조:불휴식조,휴식3 h조,휴식3 h+완구조,공모각반.근거평분표준분별기록휴식과정중저적정신상황.방혈시수집혈양,용우분석혈장중피질순、촉신상선피질격소(ACTH)농도,유산탈경매、기산격매활성,유산、혈당농도;첨가EDTA-K<,2>항응제적혈양용우혈세포분석.동시재방혈시,측정혈온.도재후.측정배최장기24 h적수손실;배최장기(LM)、반막기(SM)45 min이급24 h적pH、색치、도전솔.결과표명:①휴식3 h+완구조재3개시간단적정신평분요겁현저고우휴식3 h조,수착시간적연장저도표현출추우평정적추세;②휴식3 h+완구조화휴식조3 h조재피질순、촉신상선피질격소요현저저우불휴조(P<0.05),상반유산탈경매、기산격매요현저고우불휴식조(P<0.05),이휴식3h+완구조여휴식3 h조차별불현저(P<0.05);③3개휴식처리조재육질지표상몰유출현현저차별(P<0.05);④휴식3 h+완구조、휴식3 h조재홍세포수(RBC)、혈홍단백함량(HGB)균요현저저우불휴식조(P<0.05);휴식3h+완구조재백세포수(WBC)상현저고우불휴조(P<0.05);휴식3 h조적림파세포절대치(W-SCC)현저고우불휴식조(P<0.05);이휴식3 h+완구조여휴식3 h조재소유적면역지표상도몰유현저차이(P>0.05).근거상술적결과현시,재전일정요양저유일개휴식적과정,저충조시능유효완해저적응격,병능회복기면역능력;재휴식적과정중,첨가부분복리완구,지소대저적정신상태유명현적호처.
A total of 60 crossbred (Large White×Landrace) pigs with halothane genotype NN (castrated males and females) were allotted into three treatments: 3 h lairage with toys, 3 h lairage and 0 h lairage in a randomized complete block design and used to evaluate the influence of lairage conditions on mental performance, blood index and meat quality for finishing pigs at slaughter. Mental performance of the pigs was recorded by score standards during lairage. Blood samples were taken at exsanguinations to measure blood temperature, plasma cortisol, ACTH, glucose, lactate, plasma enzymes and hematological index. Post-mortem meat quality measure-ments including muscle colour value (MCV),electrical conductivity (EC), pH at 45 min and 24 h from Longissimus thoracis and Semimembranosus and drip loss were taken respectively. The re-sult showed:① 3 h lairage group with toys demonstrated significantly higher mental performance than 3 h lairage group at 3 sampling times. All the pigs showed increasedly calm with the lairage time running off; ② 0 h lairage increased cortisol, ACTH and lactate (P<0.05), while de-creased lactate dehydrogenase(LDH), creatine kinase(CK) (P<0.05). All biochemical index in serum were not influenced by toys during lairage (P<0.05); ③ Muscle colour value, electrical conductivity, pH at 45 min and 24 h from Longissimus thoracis(LM)and Semimembranosus(SM) and drip loss were not affected by any treatment (P<0.05); ④ 3 h lairage with toys and 3 h lairage groups exhibited high red blood cell (RBC), hemoglobin (HGB) when compared to 0 h lairage. Whereas, 3 h lairage with toys displayed higher white blood cell (WBC) levels than 0 h lairage. In addition, Lymphocyte (W-SCC) was significantly higher in 3 h lairage compared with 0 h lairage. There were significant difference for hemocyte index between 3 h lairage with joys and 3 h lairage groups. We could conclude from the results that in local commercial conditions, the most adequate pre-slaughter lairage time was 3 hours for short travel. Pigs resting showed an increase in relieving stress and a recovery in immune competence. Hence, holding pigs in lairage with toys for a few hours after arrival at the abattoir may at least improve mental state.