Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
The imply decades to start with calving for everybody types assembled is actually ± weeks, representing just as much as three-years (couple of years eleven weeks 19 days ± eleven days 24 hours). The minimum are weeks as well as the restriction are weeks. Many precocious heifers calved within this 24 months ( months). Getting 50% of heifers, basic calving is at days. The initial attributes took place on average in the ± months ( to help you months).
The latest indicate AFC of the crossbreeds was lower than those individuals claimed among Zebu under the tropics at the more 40 months said in a lot of education ( Rahman mais aussi al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you can El Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Some writers keeps claimed abilities very alongside all of our observance on additional crossbreeds in Africa, regardless of cow types used in the newest experiment: 34 weeks one of many Montbeliard crossbreeds in the Algeria ( Madani and you may Mouffok, 2008 ) and you will Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 months regarding the Girolando hybrid when you look at the Benin ( Doko ainsi que al., 2012 ). It absolutely was a comparable to your Holstein-Friesian crossbreed cattle from inside the Ethiopia on thirty six.cuatro ± 1.7 weeks, the latest Borgou and you will Lagunaire breeds at the thirty six.1 ± six.31 days within the Benin ( Adamou-Ndiaye et al., 2003 ) and in brand new Azawak Zebu on thirty six.5 ± 4.ten and you will ± thirteen months within the Niger ( Achard and you will Chanono, 2006 , 1997 ).
Our very own observation try more than those people reported by the Genzebu ainsi que al. (2016) one of crossbreed cows during the Kenya (26.9 ± 5.cuatro and you can 27.0 ± step three.eight weeks). It actually was somewhat a lot better than the newest findings from the Ngodigha ainsi que al. (2009) away from 30.eight ± dos.5 weeks certainly crossbreeds (Holstein x Bunadji) within the Nigeria, Ben Salem mais aussi al. (2009) out of 29.eight ± 4.12 months from inside the Holstein in the Tunisia and Srairi and you will Mousili (2014) regarding 29 months from inside the Montbeliard inside Morocco.
One of the more crossbreeding types understood ( Table step one ), the fresh new Fulani Zebu (FZ) inseminated with sperm away from Montbeliard (MB x FZ) and you may Alps Brownish (Abdominal x FZ) possess delivered many precocious corssbreeds (first calving during the a couple of years) (5%). Whenever you are, the brand new inseminations of Fulani Zebu cattle toward sperm from Holstein (HT x FZ) and of Tarentaise (T x FZ) then the insemination of Gudali Zebu cows that have semen out-of Montbeliard (MB x GZ) has put the precocious hybrid cattle.
Specific version facts associated with the AFC were analyzed to help you achieve the statements
Desk 1: Decades to start with calving (months) predicated on crossbreeding enter in dairy cattle farms in your community regarding Bobo-Dioulasso from inside the Burkina Faso
To help you most useful understand the effectation of brand new crossbreeding towards sexual precocity regarding crossbreed dogs, new AFC was reviewed predicated on: crossbreed types of, race of sire moms and dads (bull and you may inseminated regional cattle), hybridization level and you may inventory farms
The study focused on this new breeding track of twenty (20) hybrid cattle as a result of the new interbreeding from the fake insemination between regional reproduce cows (Gudali Zebu and you will Fulani Zebu) and you may exotic breed bulls (Holstein, Alps Brown, Tarentaise, Montbeliard) want Bisexual dating. These crossbreeds had been born ranging from 1999 and you will 2010 and you may provided its earliest calf anywhere between 2002 and 2012 into three increased stock farms within the urban and you may suburban areas of Bobo-Dioulasso. Each one of these facilities possess from the 50 hybrid cattle inside development. The first farm is found in a city, the next ten Kilometer aside on south hop out and 3rd 60 Km out within eastern hop out off Bobo-Dioulasso. Initial surveys between throughout these components aided to pick these types of around three facilities with a cattle register (heat and you can fake insemination monitoring sheets). Occurrences associated with private monitoring of creature reproduction eg calving schedules, times of your own very first warms and inseminations were submitted day-after-day by the fresh new cattlemen plus the inseminators. This new exploitation ones documents managed to make it you can to determine twenty (20) first calving’s comparable to the original attributes. These facilities is characterized by the presence of destroyed, a great herd fitness keeping track of, a guided reproduction form (mostly AI, to possess shortage of a designated bull), this new concentrate offers (pure cotton pie or cottonseed and you may industrial malt) on ration serving and extreme shipments off silage and you can farming by issues. The only aim of so it procedure variety of is the creation and marketing from by hand processed milk products, twice a day (morning and nights). The brand new focuses try offered towards the dogs on their come back from grazing and also in new day from the milking date.