本文選題：蕨麻豬　切入點：大耳系　出處：《西北農(nóng)林科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：蕨麻豬屬藏豬中的小型豬,原產(chǎn)地在甘肅甘南藏族自治州,早在2006年就被認(rèn)定為中華人民共和國“國家級畜禽遺傳保護(hù)品種”。本研究所選蕨麻豬來自陜西華陽良種豬有限公司,他們在飼養(yǎng)過程中發(fā)現(xiàn)大耳和小耳系蕨麻豬生長性狀存在明顯的差異性,本研究針對大耳和小耳系蕨麻豬的肥育性能、胴體性能、肉質(zhì)性狀進(jìn)行了比較分析。本試驗選擇日齡相近的大耳和小耳系蕨麻豬各15頭,分欄飼養(yǎng),每欄5頭,在相同條件下飼養(yǎng)。肥育130日后,隨機(jī)選擇大耳和小耳系蕨麻豬各3頭,進(jìn)行相關(guān)性能測定,測定結(jié)果如下:1、大耳和小耳系蕨麻豬肥育性能分析:大耳系蕨麻豬肥育效果顯著好于小耳系(P0.01),大耳系料重比顯著低于小耳系(P0.05)。2、大耳和小耳系蕨麻豬胴體性能分析:兩品系豬宰前活重、胴體重、胴體長、平均背膘厚呈顯著性差異(P0.05),表明大耳系蕨麻豬體形比小耳系大。大耳系屠宰率、眼肌面積、脂肪率等屠宰性狀在數(shù)值上與小耳系存在一定差距,但差異不顯著(P0.05)。3、大耳和小耳系蕨麻豬肉質(zhì)性狀分析:(1)肉質(zhì)性狀:兩品系豬肉pH均在正常范圍內(nèi),大耳系蕨麻豬肉大理石紋分值為4.73,極顯著高于小耳系的3.13分(P0.01);大耳系剪切力23.04 N,小耳系剪切力16.14 N,剪切力差異顯著(P0.05),表明小耳豬嫩度較大耳豬好;(2)脂肪酸含量:兩品系肌內(nèi)脂肪含量差異極顯著(P0.01),其中大耳系2.66%,小耳系1.47%,這與大理石紋分值結(jié)果相吻合。大耳系蕨麻豬飽和脂肪酸含量較小耳系低,其中硬脂酸含量差異顯著(P0.05);(3)氨基酸含量:必需氨基酸含量大耳系為8.34%,小耳系8.14%,二者之間差異極顯著(P0.01),大耳系蘇氨酸含量極顯著高于小耳系(P0.01),大耳系蕨麻豬亮氨酸、賴氨酸以及風(fēng)味氨基酸、天冬氨酸、絲氨酸、谷氨酸、精氨酸含量顯著高于小耳系(P0.05)。綜上所述,大耳系蕨麻豬肥育性能較小耳系好,兩品系胴體性狀不存在顯著差異,大耳系蕨麻豬必需氨基酸含量高于小耳系。
[Abstract]:A small pig of Tibetan pigs, native to Gansu and Gannan Tibetan Autonomous Prefecture, it was recognized as a "national breed of livestock and poultry genetic protection" in the people's Republic of China in 2006. The selected fern hemp pig in this study came from Shaanxi Huayang Fine breed Pig Co., Ltd. In the course of feeding, they found that there were obvious differences in growth traits between large ear and small ear ferns. This study aimed at the fattening performance and carcass performance of big ear and small ear fern. The meat quality characters were compared and analyzed. In this experiment, 15 big ear and 15 small ear fern hemp pigs of similar age were fed in columns, 5 in each column, and fed under the same conditions. After 130 days of fattening, 3 large ear ferns and 3 small ear ferns were randomly selected. To carry on the related performance measurement, The results are as follows: 1. The results are as follows: the fattening effect of large ear fern and small ear fern is better than that of small ear P0. 01, the feed weight ratio of big ear is significantly lower than that of small ear, and the carcass performance of big ear and small ear fern is lower than that of small ear. Two strains of pigs live before slaughter, There were significant differences in carcass weight, carcass length and average backfat thickness (P 0.05), which indicated that the body shape of large ear line fern Ma pig was larger than that of small ear line, and the slaughter rate, eye muscle area and fat percentage of large ear line were different from those of small ear line. However, the difference was not significant (P0.05. 3). The meat quality traits of Pteris macrophylla and Pteris microphylla were in the normal range, the meat quality characters of the two lines were in the normal range. The marbling score of large ear fern was 4.73, which was significantly higher than that of small ear (3.13) (P 0.01), and the shear stress of large ear (23.04 N) and microear (16.14 N), the difference of shear force was significant (P 0.05), which indicated that the content of fatty acid in small ear pigs with higher tenderness was higher than that in small ear pigs (P < 0.05). The difference of intramuscular fat content between the two strains was very significant (P 0.01). The content of saturated fatty acids in large ear line 2.66 and small ear line 1.47 was consistent with the marbling score. The saturated fatty acid content of large ear fern hemp pig was lower than that of small ear line. Among them, the content of stearic acid was significantly different (P 0.05) amino acid content: the content of essential amino acid was 8.34 in the large ear line, 8.14 in the small ear line. The difference between them was very significant (P 0.01). The content of threonine in the large ear line was significantly higher than that in the small ear line (P 0.01). The contents of lysine and flavor amino acids, aspartic acid, serine, glutamic acid, arginine were significantly higher than those of small ear line P0.05. In conclusion, the fattening performance of big ear line fern Ma pig was better than that of small ear line, and there was no significant difference in carcass traits between the two lines. The content of essential amino acids in large ear fern hemp pig was higher than that in small ear line.
【學(xué)位授予單位】：西北農(nóng)林科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S828.89

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相關(guān)期刊論文 前1條

1 楊延彪,曹國順,郭宏偉,張桂芹;甘南蕨麻豬的生態(tài)分布及其生產(chǎn)性能[J];家畜生態(tài);2003年01期

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本文編號：1598475