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 fresh indicate many years to start with calving for everyone breeds make try ± days, representing everything three years (couple of years eleven weeks 19 days ± 11 weeks day). Minimal was days additionally the maximum try days. The most precocious heifers calved inside two years ( months). For 50% out-of heifers, first calving was at weeks. The initial qualities took place an average of at the ± months ( so you’re able to weeks).
The mean AFC of your crossbreeds was lower than people said one of several Zebu in tropics within over 40 months claimed in lots of knowledge ( Rahman et al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you may El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Some article authors features said abilities very close to the observation into the more crossbreeds in Africa, notwithstanding cow types utilized in the new check out: 34 days among the many Montbeliard crossbreeds into the Algeria ( Madani and you can Mouffok, 2008 ) and you will Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 days regarding the Girolando hybrid during the Benin ( Doko ainsi que al., 2012 ). It absolutely was a comparable towards the Holstein-Friesian hybrid cows into the Ethiopia from the thirty six.4 ± step 1.seven weeks, new Borgou and you will Lagunaire breeds within thirty six.1 ± 6.29 weeks inside the Benin ( Adamou-Ndiaye mais aussi al., 2003 ) and also in the Azawak Zebu at the 36.5 ± 4.10 and you will ± thirteen months into the Niger ( Achard and you can Chanono, 2006 , 1997 ).
Our very own observance try more than those individuals claimed because of the Genzebu et al. (2016) certainly one of crossbreed cattle during the Kenya (twenty six.nine ± 5.cuatro and you will 27.0 ± step three.seven days). It absolutely was a little better than the newest findings because of the Ngodigha ainsi que al. (2009) out-of 29.seven ± dos.5 months certainly one of crossbreeds (Holstein x Bunadji) in Nigeria, Ben Salem mais aussi al. (2009) of 30.eight ± 4.1 year within the Holstein within the Tunisia and Srairi and you may Mousili (2014) out-of 29 weeks in the Montbeliard for the Morocco.
One of many different crossbreeding types recognized ( Dining table step one ), the latest Fulani Zebu (FZ) inseminated which have sperm out of Montbeliard (MB x FZ) and you can Alps Brownish (Abdominal x FZ) possess introduced one particular precocious corssbreeds (first calving on a couple of years) (5%). While you are, the fresh new inseminations out of Fulani Zebu cattle on sperm off Holstein (HT x FZ) and you will of Tarentaise (T x FZ) then your insemination away from Gudali Zebu cows that have semen away from Montbeliard (MB x GZ) has actually delivered brand new precocious hybrid cattle.
Certain type things of the AFC was basically examined in order to reach the statements
Desk step 1: Ages initially calving (months) centered on crossbreeding type in milk cows facilities in the region away from Bobo-Dioulasso within the Burkina Faso
So you can best comprehend the effectation of the crossbreeding towards the intimate precocity from crossbreed pet, the latest AFC was examined according to: crossbreed sort of, race from sire moms and dads (bull and you will inseminated regional cattle), hybridization height and you will inventory facilities
The research worried about the fresh breeding tabs on twenty (20) crossbreed cattle because of the new interbreeding from fake insemination anywhere between local Chinese Sites dating online reproduce cattle (Gudali Zebu and you may Fulani Zebu) and unique reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). Such crossbreeds have been born between 1999 and you will 2010 and you may gave the first calf anywhere between 2002 and you can 2012 towards about three improved inventory facilities from inside the urban and you will suburban areas of Bobo-Dioulasso. Every one of these farms keeps in the 50 hybrid cattle during the production. The original ranch is situated in an urban area, next 10 Km out at the southern area hop out and the 3rd sixty Kilometres aside at the eastern get-off away from Bobo-Dioulasso. Original surveys anywhere between within these elements helped to pick these around three facilities which have a cattle check in (heat and you can phony insemination overseeing sheet sets). Occurrences linked to individual monitoring of creature breeding particularly calving dates, schedules of one’s first heating and you may inseminations was in fact recorded every day of the this new cattlemen and the inseminators. The fresh exploitation of them documents caused it to be you can easily to decide twenty (20) very first calving’s comparable to the original attributes. These types of facilities is characterized by the current presence of lost, a herd fitness overseeing, a guided reproduction means (mostly AI, to possess decreased a designated bull), the concentrate provides (thread pie otherwise cottonseed and you will industrial malt) in the ration serving and rigorous shipment out-of silage and you may farming because of the points. The only intent behind this procedure particular is the production and you can product sales of by hand canned whole milk, twice a day (day and you may evening). This new focuses was offered into dogs on the get back regarding grazing as well as in the latest morning at milking go out.