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Animal Science Laboratory

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  Animal Science Laboratory 121Exercise No. 6Growth Performance and Feed Conversion Ratio of BroilersI. IntroductionManaging the modern broiler is an exciting challenge. Inside 35 to 45 days, broiler chickens can attain about 1.5kg in live weight, an easy and efficient way of animal production business as turnover is fast. An important part of allowing broiler to achieve their full economic potential is to ensure that they receive the correct nutrition, with particular attention being paid tothe three stages of production: booster, starter, and finisher. At these times, the broiler manager must take into account the status of the flock, with respect to level of body-weight gain, fatreserves, and feather cover, to ensure that the birds are not being over or under fed. In thisactivity, however, the Average Daily Gain and Feed Conversion Ratio were used to accuratelyobserve the growth performance of 15 chicks, from the day they were housed to harvesting age.II.Objectives:1.To appreciate the importance of good quality nutrition; and2.To know how to compute average daily gain and feed conversion ratio in broilers and its relevance to growth performance.III.Materials:  Broiler management activity in the project  Weighing scaleIV. Procedurea.The class with their corresponding groups will proceed to their assigned project. b.Each group will be weighing their sample chicks which represent weekly gain and feed conversion data for the first week of management.c.With the data, the students compute for average daily gain and feed conversion ratio of their chicks in the first week of check-in.V.Results DateWeight (grams)Average Oct 22, 201875g  75g 75g  75g 75g 75g Oct 25, 2018  108.5g 100.4g 111.5g  94g 121.7g 107.22g Oct 31, 2018  230g 250g 300g 270g 230g 256g  Nov 8, 2018  600g 700g 600g 600g 700g 640g  Nov15,  1,100g 950g 1,050g  1,050g 950g 1020g 2018   . = ℎ ℎ − ℎ ( )  ( ) 1 st  week  = 107.2 − 75 = 2000 48.05 ×15 ℎ ADG = 8.05g per dayFCR = 16.56 2 nd  week  = 256 − 75 = 3500 630.17 × 15 ℎ ADG = 30.17g per dayFCR = 7.733 rd  week  = 640 − 75 = 7000 870.63 × 15 ℎ ADG = 70.63g per dayFCR = 6.61 4 th  week  = 1020 − 75 = 8500 7135 ×15 ℎ ADG = 135g per dayFCR = 4.2  VI. ConclusionRaising broiler chicks into harvestable chickens was very challenging, and that was onlywith 15 animals and done with a group. Supposedly, funds for the feeds and labour and effort for the maintenance and upkeep of the area should have been abundant because of the more thanenough numbers of the members of the group. But because of miscommunication and generalincoordination between the members, the chicks suffered from the poor treatment andmanagement. The members had already significant body of knowledge and information pertaining to broiler management because of previous lessons in the lecture and laboratory andoutside experiences, but still the quality of the birds during the operation and harvest was poor.This was reflected on the Feed Conversion Ratio: the nearer the FCR is to 1, the more efficient isthe production. On the fourth week, a week before the chickens were harvested, the calculatedFCR was 4.2. This can be interpreted as the chickens were consuming about four times their daily weight gain with only a quarter of it reflected as bodyweight, a large number to consider after calculating the cost of feeding and the assumed profit if the chickens are sold.VII. RecommendationDuring the first week of feeding the chicks, starter ration was fed instead of booster ration, in thehopes of getting a headstart, thinking that feeding starter ration will have a faster growth rate. Itwas observed that the chicks had a difficulty in swallowing the pellets since their throats cannotaccommodate the size of the feeds. Most of the feeds were discarded by the chicks. In the future,feeding management should follow the recommended ration to be fed according to the stage of  production of the animals in order to be efficient.VIII. References Successful Broiler Production Depends on a Sound Feeding Program. Mississippi State UniversityExtension. Information Sheet 1609 (POD-01-16). Copyright 2016. Retrieved 22 November 2018 from: https://extension.msstate.edu/sites/default/files/publications/information-sheets/is1609_0.pdf Broiler Production. Trainer’s Manual – Unit 5 – Commercial Broiler Production. Retrieved 22 November 2018 from: http://www.poultryhub.org/family-poultry-training-course/trainers-manual/broiler-production/Simple Calculations: Feed Conversion, Daily Gain and Mortality. 03 April 2014. The Pig Site.Retrieved 22 November 2018 from: http://www.thepigsite.com/articles/4694/simple-calculations- feed-conversion-daily-gain-and-mortality/
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